Nut-lock.



C. D. LOEHR.

NUT LOCK.

APPLICATION FILED MAR. 30. 1909.

Patented. Feb. 15, 1910.

[NI/EN TOR ilar reference numerals CLARENCE D. LOEHR, 0F LAPOR'IE, INDIANA.

NUT-LOCK.

Specification of Letters Patent.

Application tiled March 30, 1909. Serial No. 486,669.

Y I do hereby declare the following to be 'a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in nut locks and my object is to provide means for swelling parts of the bolt to prevent the nut from leaving the same after being turned thereon.

Otherobjects and advantages will be hereinafter referred to and more particularly pointed out in the claim:

In the accompanying drawings forming part of this application, Figure 1 is an elevation of the bolt showing the nut and arts through which the same is extended 1n section. Fig. 2 is a perspective view of the bolt, and, Fig. 3 is an end elevation thereof with the head of the bolt omitted.

Referring to the drawings in which simesignate .corre;

sponding parts throughout the'several views, 1 indicates a bolt one end of which is pro vided with a head 2, while ,the oppositeportion thereof is provided with threads 3,

which threads are adapted to receive a nut 4. That portion ofthe bolt 1 adjacent the head 2 ispreferably provided with a square ortion 5, which revents the bolt from turn- 1n after it has een introduced through an ob ect having a siuare o ening therein, or the bolt may be le t'roun if preferred, and

4 inforder to securely lock the nut on the bolt' the threaded portionof the bolt is rovide with a longitudinall extending s 0t 6, in

' ,which slot a tool of arger dimensions than the width of theslot mhy be introduced, to spread or enlarge the surface of the bolt and by first ascertaining the position the nut will assume when turned onto the bolt and introducin the instrument, in the slot and thus enlarge t e surface of the bolt as best shown by dotted lines at 8 in Fi 1 the nutwhen forced onto the bolt, will e tightly clamped thereon. Afterthe nut has been thus turned home, the instrument may be introduced immediately in the rear of the nut and the surface of the bolt ex anded as shown at 9, thereby securely loc ing the nut against casual rotation. It will be understood of course that the enlargement or expansion of the parts of the bolt will not be such as 'to prevent the nut from being forced on or off of the bolt, the nut when turned onto the bolt, causing the walls of the slot at the points of enlargement to be compressed to a natural position or conform to the inner circumference of the nut and by providing the end of the bolt with an auxiliar slot 10, the end of the bolt may be sprea to lock the nut when the nut is located so near the end of the bolt as to prevent the tool from being introduced into the slot 6. By providin this form of bolt, it will be readily seen t at the nut can be securely locked on the bolt and removed as many times as occasion may require, and it will likewise be seen that the usual or any referred form of nut or bolt may be use the only reuirements being to provide the bolt with t e slots as shown, to render the same aplicable forlusej in looking the nut on the 0113. i r

What I claim is: Y

In a nut look, a bolt threaded at one end and having a longitudinal slot extending along one side thereof a transverse auxiliary slot bifurcating the unheaded end of said bolt and intersecting said longitudinal slot, a nut adapted to be applied to said bolt, said slot being bulged at a point over which said nut rests and also at a point just beyond where said nut rests, said bulges 1n the slot causing corresponding bulges upon the surface of the threaded portion of said bolt, whereby said nut is secured against casual rotation.

In testimony whereof I have signed my name to this specificationin-the presence of two subscribing witnesses.

CHARLES O. LARsoN, HOMER F. Ramsnnncnn.

Patented Feb. 15, 1910. 

